From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Mariell Hoversholm <proximyst@proximyst.com>
Date: Sat, 9 Jan 2021 22:22:59 +0100
Subject: [PATCH] Movement options for armour stands

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.

diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
index 073be230a8c0e2ccf6b4304e2988c270749f1a35..b521a9984c327f74bccd634a8bfe26f2cd638462 100644
--- a/src/main/java/net/minecraft/server/Entity.java
+++ b/src/main/java/net/minecraft/server/Entity.java
@@ -1369,7 +1369,7 @@ public abstract class Entity implements INamableTileEntity, ICommandListener, Ke
         return this.isInWater() || flag;
     }
 
-    void aL() {
+    void aL() { // Purpur - diff on change; this is `updateInWaterStateAndDoWaterCurrentPushing()V`
         if (this.getVehicle() instanceof EntityBoat) {
             this.inWater = false;
         } else if (this.a((Tag) TagsFluid.WATER, 0.014D)) {
diff --git a/src/main/java/net/minecraft/server/EntityArmorStand.java b/src/main/java/net/minecraft/server/EntityArmorStand.java
index 6efe59e0385e144c59804e9e5e18e6910b1f6667..951e899e85c622d06bab7c4695366b8305d5b636 100644
--- a/src/main/java/net/minecraft/server/EntityArmorStand.java
+++ b/src/main/java/net/minecraft/server/EntityArmorStand.java
@@ -52,10 +52,12 @@ public class EntityArmorStand extends EntityLiving {
     private boolean noTickPoseDirty = false;
     private boolean noTickEquipmentDirty = false;
     // Paper end
+    public boolean canMovementTick = true; // Purpur
 
     public EntityArmorStand(EntityTypes<? extends EntityArmorStand> entitytypes, World world) {
         super(entitytypes, world);
         if (world != null) this.canTick = world.paperConfig.armorStandTick; // Paper - armour stand ticking
+        if (world != null) this.canMovementTick = world.purpurConfig.armorstandMovement; // Purpur
         this.handItems = NonNullList.a(2, ItemStack.b);
         this.armorItems = NonNullList.a(4, ItemStack.b);
         this.headPose = EntityArmorStand.bj;
@@ -897,4 +899,18 @@ public class EntityArmorStand extends EntityLiving {
         return true;
     }
     // Paper end
+
+    // Purpur start
+    @Override
+    void aL() {
+        if (this.world.purpurConfig.armorstandWaterMovement &&
+            (this.world.purpurConfig.armorstandWaterFence || !(world.getType(getBlockLocation().down()).getBlock() instanceof BlockFence)))
+            super.aL();
+    }
+
+    @Override
+    public void movementTick() {
+        if (this.canMovementTick && this.canMove) super.movementTick();
+    }
+    // Purpur end
 }
diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
index 0fce0eb902393e28b18b06bea09558f7b5793e0a..242fa7d0acca116f5efcc64066c66b8dca12bce4 100644
--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
@@ -111,10 +111,16 @@ public class PurpurWorldConfig {
     public boolean armorstandSetNameVisible = false;
     public boolean armorstandFixNametags = false;
     public float armorstandStepHeight = 0.0F;
+    public boolean armorstandMovement = true;
+    public boolean armorstandWaterMovement = true;
+    public boolean armorstandWaterFence = true;
     private void armorstandSettings() {
         armorstandSetNameVisible = getBoolean("gameplay-mechanics.armorstand.set-name-visible-when-placing-with-custom-name", armorstandSetNameVisible);
         armorstandFixNametags = getBoolean("gameplay-mechanics.armorstand.fix-nametags", armorstandFixNametags);
         armorstandStepHeight = (float) getDouble("gameplay-mechanics.armorstand.step-height", armorstandStepHeight);
+        armorstandMovement = getBoolean("gameplay-mechanics.armorstand.can-movement-tick", armorstandMovement);
+        armorstandWaterMovement = getBoolean("gameplay-mechanics.armorstand.can-move-in-water", armorstandWaterMovement);
+        armorstandWaterFence = getBoolean("gameplay-mechanics.armorstand.can-move-in-water-over-fence", armorstandWaterFence);
     }
 
     public boolean controllableMinecarts = false;